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Add subsec_millis and subsec_micros methods for TimeDelta.

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Co-authored-by: Micha White <botahamec@outlook.com>
This commit is contained in:
Georges Goetz 2025-02-26 19:23:18 +00:00 committed by Dirkjan Ochtman
parent f0f807d1b5
commit 042109f4f8
1 changed files with 38 additions and 0 deletions
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38
src/time_delta.rs
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@ -313,6 +313,24 @@ impl TimeDelta {
if self.secs < 0 && self.nanos > 0 { self.nanos - NANOS_PER_SEC } else { self.nanos }
}
/// Returns the number of microseconds in the fractional part of the duration.
///
/// This is the number of microseconds such that
/// `subsec_micros() + num_seconds() * 1_000_000` is the truncated number of
/// microseconds in the duration.
pub const fn subsec_micros(&self) -> i32 {
self.subsec_nanos() / NANOS_PER_MICRO
}
/// Returns the number of milliseconds in the fractional part of the duration.
///
/// This is the number of milliseconds such that
/// `subsec_millis() + num_seconds() * 1_000` is the truncated number of
/// milliseconds in the duration.
pub const fn subsec_millis(&self) -> i32 {
self.subsec_nanos() / NANOS_PER_MILLI
}
/// Returns the total number of whole milliseconds in the `TimeDelta`.
pub const fn num_milliseconds(&self) -> i64 {
// A proper TimeDelta will not overflow, because MIN and MAX are defined such
@ -779,6 +797,26 @@ mod tests {
assert_eq!(TimeDelta::nanoseconds(1_000_000_001).subsec_nanos(), 1);
}
#[test]
fn test_duration_subsec_micros() {
assert_eq!(TimeDelta::zero().subsec_micros(), 0);
assert_eq!(TimeDelta::microseconds(1).subsec_micros(), 1);
assert_eq!(TimeDelta::microseconds(-1).subsec_micros(), -1);
assert_eq!(TimeDelta::seconds(1).subsec_micros(), 0);
assert_eq!(TimeDelta::microseconds(1_000_001).subsec_micros(), 1);
assert_eq!(TimeDelta::nanoseconds(1_000_001_999).subsec_micros(), 1);
}
#[test]
fn test_duration_subsec_millis() {
assert_eq!(TimeDelta::zero().subsec_millis(), 0);
assert_eq!(TimeDelta::milliseconds(1).subsec_millis(), 1);
assert_eq!(TimeDelta::milliseconds(-1).subsec_millis(), -1);
assert_eq!(TimeDelta::seconds(1).subsec_millis(), 0);
assert_eq!(TimeDelta::milliseconds(1_001).subsec_millis(), 1);
assert_eq!(TimeDelta::microseconds(1_001_999).subsec_millis(), 1);
}
#[test]
fn test_duration_num_milliseconds() {
assert_eq!(TimeDelta::zero().num_milliseconds(), 0);